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Table 2. Crash data for fatal and serious injury collision by jurisdiction and collision type. <br />2017 through 2021 Crash Data <br />Fatal/Serious Injury Colllsion Types and Conditions <br />Type of Collision <br />(Run-off the Road) <br />Kittitas County <br />Number Percent <br />of of <br />Crashes Crashes <br />All Counties -Co. <br />Maintained Roads <br />Number Percent <br />of of <br />Crashes Crashes <br />Ali Public Roads <br />(Washington State) <br />Number percent of <br />of Crashes <br />Crashes <br />Hit Fixed Object - Roadway Ditch <br />4 <br />30.80% <br />208 <br />16.60% <br />442 <br />12.20% <br />Hit Fixed Object - Tree/Stump Stations <br />3 <br />23.10% <br />293 <br />23.40% <br />654 <br />18.00% <br />Hit Fixed Object - Fence <br />1 <br />7.70% <br />80 <br />6.40% <br />181 <br />5.00% <br />Hit Fixed Object - Earth Bank <br />1 1 <br />7.70% <br />139 <br />11.10% <br />319 <br />8.80% <br />Hit Fixed Object - Over Embankment <br />1 <br />7.70% <br />91 <br />7.30% <br />250 <br />6.90% <br />Hit Fixed Object - Boulder Stations <br />1 <br />7.70% <br />31 <br />2.50% <br />59 <br />1.60% <br />Hit Fixed Object - Utility Box <br />1 <br />7.70% <br />8 <br />0.60% <br />24 <br />0,70% <br />Hit Fixed Object - Rock Bank <br />1 <br />7.70% <br />7 <br />0.60% <br />36 <br />1.00% <br />Total Hit Fixed Object <br />13 <br />4480% <br />1,254 <br />4280% <br />3,636 <br />2790% <br />Total Overturn <br />6 <br />2070% <br />259 <br />880% <br />858 <br />660% <br />Light Condition - Dark, No Street Lights <br />8 <br />27.60% <br />823 <br />28.10% <br />2,078 <br />15.90% <br />Light Condition - Dawn <br />1 <br />3.40% <br />66 <br />2.30% <br />240 <br />1.80% <br />Light Condition - Dusk <br />1 <br />3.40% <br />108 <br />3,70% <br />424 <br />3.20% <br />Light Condition - Dark, Street Lights On <br />0 <br />0.00% <br />264 <br />9.00% <br />3,128 <br />24.00% <br />Total Light Condition <br />10 <br />34.40% <br />1,261 <br />4310% <br />5,870 <br />4490% <br />Non -Intersection - Not Related <br />21 <br />72.40% <br />1,960 <br />66.90% <br />7,435 <br />57.00% <br />Road Curvature - Horizontal Curve <br />10 <br />34.50% <br />1,046 <br />35.70% <br />3,164 <br />24.20% <br />Over Centerline <br />2 <br />4.70% <br />103 <br />2,801/6335 <br />2.10% <br />Motorcycle <br />5 <br />13.50% <br />625 <br />14.900 <br />,504 <br />12.00% <br />Posted Speed Limit at 50 mph <br />25 <br />73.50% <br />919 <br />25.10% <br />E21,884 <br />10.80% <br />Risk -Based Prioritization Methodology <br />Run-off the road crashes have been identified as the predominant collision type in Kittitas County and are occurring <br />at a disproportionately high rate on specific corridors as compared to other public roads in the state as shown in the <br />crash data provided by WSDOT for 2017-2021, reflected in Table 2. As a result, this plan will focus on roadside <br />safety improvements to reduce the severity and number of accidents on Kittitas County roads where it is most likely <br />that run-off the road crashes will occur. <br />From a safety perspective, the ideal roadway is straight with roadsides that are flat and unobstructed by hazards. <br />Straight roadways eliminate the need for drivers to navigate curves, reducing the chances of running off the road. <br />Providing the recommended clear zone and roadside slopes allows drivers to safely recover control of a vehicle in <br />the event they do leave the roadway and helps ensure fixed -object hazards do not cause fatal or serious injury <br />7 <br />